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PODCAST

Building HVAC Science

Uncover the secrets of healthy, comfortable, and energy-efficient buildings with the Building HVAC Science podcast. Join HVAC and building performance experts Eric Kaiser and Bill Spohn, Sr., as they delve into the fascinating world of building science and HVAC diagnostics. From exploring the latest advancements in measurement technology to examining the impact of building science and proper HVAC design and installation on human health and safety, this podcast is your one-stop shop for learning

education how to

All Episodes

33:30

EP264 The Unsung Heroes of HVAC Education, Mentors...

Building HVAC Science ·

2026/04/03

"There are people who teach for income, and people who teach for outcome." "You want to grow an industry, you can't ignore half America." "Become an unsung hero, mentor someone, and give back to the industry you love." In this episode of Building HVAC Science, Bill and Eric are joined by Renee Tomlinson and Howard Weiss from ESCO Institute (and HVAC Excellence) to talk about a theme that does not get nearly enough airtime: the "quiet" people in HVAC who shape careers and raise standards without

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29:12

EP263 Surviving and Thriving in HVACR: Lessons from...

Building HVAC Science ·

2026/03/27

"The more you know, the more you're worth and the harder you are to replace." "Just because you're a great technician doesn't mean you're ready to run a business." "You can't buy the satisfaction of helping someone you may never meet." Bill sits down with Rick Diermeyer, better known to many in the trade as the face behind the HVACR Survival YouTube channel. Rick shares the origin story of his channel, which now boasts tens of thousands of subscribers and hundreds of field-based videos. What began

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36:02

EP262 "RTFM" and Real-World HVAC Confidence: Why...

Building HVAC Science ·

2026/03/20

Episode Quotes: "Airflow isn't good. It's measured." "Most pushback isn't 'I won't.' It's 'I'm afraid I'll mess it up.'" "This is a people industry, by people, for people." JT Stewart joins Bill Spohn and Eric Kaiser to talk about how he went from long-term care nursing to HVAC, thanks to a red Chevy Ventura van, a ladder on top, and a "let's go fix some stuff" invitation. Today JT is an HVAC consultant at Slipstream, working with utilities and state programs to build real-world training that goes

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41:36

EP261 From Journeyman to Trainer: What Actually Works...

Building HVAC Science ·

2026/03/13

"Listen first, talk last." "Integrity costs something, you've got to be willing to pay it." "If I'm going to fail, I'm going to go down fighting." In this episode of the Building HVAC Science Podcast, Bill and Eric sit down with Don Gillis, a longtime industry pro with a career spanning roles as an installer and service tech, service manager, outside sales, corporate training, and now building technical training within a smaller nonprofit environment. Don shares the real story behind the resume:

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43:34

EP260 Live From AHR 2026: Tools, Tactics, and Trade...

Building HVAC Science ·

2026/03/06

Quotes from the episode: "If you're not measuring, you're just arguing with opinions." "The tools got better, but what really changed is the technician mindset." "We used to diagnose systems one reading at a time. Now we see the whole story live." Recorded live at 9:00 a.m. on Day 1 of the AHR Expo 2026 in Las Vegas, this episode of the Building HVAC Science Podcast captures the spirit of the industry in real time. Bill and Eric kick things off reflecting on their decades of AHR attendance, the

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44:46

EP259 Donkey Wrangler to HVAC Whisperer: Brad Adcox...

Building HVAC Science ·

2026/02/27

Pithy quotes "Your product can be great, but if you're hard to work with, nobody's going to buy it." "Take a deep breath, go back to the fundamentals, and ask: what's the biggest value I can add today?" "You're allowed to say, 'I don't know. I'll figure it out for you.' People respect that more than the runaround." Brad Adcox joined the Building HVAC Science podcast with Bill and Eric and, within minutes, earned the unofficial title "donkey wrangler" after sharing a story about his donkey

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27:33

EP258 Live From AHR 2026: Tools, Tactics, and Trade...

Building HVAC Science ·

2026/02/20

"AHR isn't just a product show, it's where you see the future of the trade taking shape in real time." "Training, technology, and community are finally moving at the same speed." "Exhausting in the best possible way, that's how you know it was a great show." Fresh off the floor of AHR Expo 2026 in Las Vegas, the TruTech Tools team jumps on the mic to share firsthand impressions from one of the HVAC industry's biggest gatherings. From Ginny's perspective as a first-time attendee navigating miles of

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34:45

EP257 From Rockets to Heat Pumps: Shreyas Sudhakar on...

Building HVAC Science ·

2026/02/13

Pithy quotes "We do our job well if the homeowner forgets about us, because the system just works." "The bar is so low in some homes that doing a quality install can genuinely change someone's life." "The best way to learn is crawling in the crawl space behind a great technician and handing them tools." Semi-famous quote that fits our theme "Stay hungry, stay foolish." © Steve Jobs Shreyas Sudhakar joined the Building HVAC Science podcast to talk about his path from rocket propulsion

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33:41

EP256 The Woodstock of HVAC: Why This Symposium Hits...

Building HVAC Science ·

2026/02/06

Episode quotes: "What you put into this, you get out of this in multiples." "It's not about sales. It's about learning, relationships, and leaving your ego at the door." "Use AI responsibly, but keep the humans involved. The humans are what keep it honest." In this episode of the Building HVAC Science Podcast, Eric Kaiser, Bill, and the TruTech Tools crew (Billy Spohn, Ginny Hebert, and Josh Crawley) recap their trip to the 7th Annual HVACR Training Symposium in Ocoee, Florida. Josh and Ginny share

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40:59

EP255 Beyond Manual J: The Heat Balance Future of...

Building HVAC Science ·

2026/01/30

Notable quote from the episode: Make it as simple as possible, but not simpler. In this episode, Eric Kaiser sits down with mechanical engineer Tony Amadio, the founder of True Loads, to talk about what actually makes residential load calculations succeed or fail in the real world. Tony shares how his work is split between builders, architects, project managers, and HVAC contractors, and why the biggest early battle was simply getting people to trust results that pointed to smaller equipment. He

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46:11

EP254 Mold, Moisture, and Missed Details: Lessons...

Building HVAC Science ·

2026/01/23

QUOTES from the episode: "Most building failures aren't mysterious. They're just ignored fundamentals." "If you demand museum-level humidity, you're no longer building a house. You're building a museum." "Moisture meters don't solve problems. They show you patterns. The thinking solves the problem." In this episode of the Building HVAC Science Podcast, Eric Kaiser is joined by Kohta Ueno, principal and co-owner of Building Science Corporation, for a wide-ranging discussion on building failures,

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42:42

EP253 The HVAC Trust Gap, and the Directory Built to...

Building HVAC Science ·

2026/01/16

Quotes from the episode: "Better isn't a goal, it's a direction." "HVAC can feel like a house of mirrors for homeowners, and the cure is transparency plus measured results." "We're not trying to find the perfect contractor. We're trying to find the contractor who keeps learning and won't get complacent." In this episode of the Building HVAC Science Podcast, Eric Kaiser flips the script and brings Bill Spohn on as a guest alongside Kevin Hart from Better HVAC and Darren Reuter and Huff Hoffmaster

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12:26

EP252 The Perfection Trap in the Trades With Eric...

Building HVAC Science ·

2026/01/09

Quotes from the episode: "Good enough isn't a fixed point. It's a moving target shaped by goals, expectations, and consequences." "Perfection can push us forward, but it can also quietly pull us off track." "If I delivered what I promised, in the time promised, using the resources promised, that is good enough for me." "The real skill is knowing when extra effort adds value and when it just adds ego." In this solo monologue episode, Eric Kaiser explores a deceptively simple question: Can good

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21:22

EP251 Innovation in HVAC: The Quiet Shifts That...

Building HVAC Science ·

2026/01/02

Quotes from the Episode: "Innovation in HVAC isn't one big breakthrough. It's a series of quieter shifts that slowly change how we work." "The future of HVAC depends on the people who measure, verify, and continuously improve." "Collecting data is getting easier. Interpreting it well is where the real value lives." "True innovation isn't about chasing trends. It's about reducing uncertainty and delivering better outcomes." "Homes aren't a collection of parts. They're systems, and HVAC sits

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32:36

EP250 Beyond the Equipment: Reflections on 250...

Building HVAC Science ·

2025/12/26

Quotes from the Episode: "Good building systems don't start with equipment—they start with a plan and a thoughtful process." "Most comfort problems aren't equipment problems; they're building problems we haven't taken the time to understand." "If even one episode helps someone take the next step in their career, then it's all been worth it." Episode 250 of the Building HVAC Science Podcast flips the script. Instead of Bill Spohn and Eric Kaiser doing the interviewing, TruTech Tools' Senior

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46:05

EP249 The Hidden Hazards: CO, H₂S and the Tech...

Building HVAC Science ·

2025/12/19

Episode quotes: "Hydrogen sulfide doesn't announce itself. It can drift in, hit your mucus membranes, and start causing real harm before you know it's there." "You can't treat sensor response like magic—it's physics, chemistry, and smart filtering working together to tell you what's actually happening in the space." In this episode, Bill & Eric sit down with Dave Massner from Sensorcon, a long-time technical contributor in the world of portable gas detection, to dig into the realities behind CO,

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39:20

EP248 Balanced Comfort, Brutal Lessons: Scaling,...

Building HVAC Science ·

2025/12/12

"Inspect your marketing the way you'd inspect a home—run diagnostics, don't guess." – Aaron Husak "Attitude is way more important than aptitude. One bad apple really can infect the whole company." – Aaron Husak In this episode of the Building HVAC Science podcast, Eric and Bill sit down with long-time friend and contractor-turned-marketing pro, Aaron Husak. Aaron traces his winding path from solar in the mid-2000s to building performance and BPI training, and then to founding Balanced Comfort in

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33:19

EP247 From CEO to Chief Education Officer: Bill Spohn...

Building HVAC Science ·

2025/12/05

"Get mad at the problem, not the person. When people feel safe, they'll actually bring you the real issues." - Bill Spohn "We're woven into the fabric of this industry. The industry made me—so in a way, it owns me." - Bill Spohn "What we have to learn to do, we learn by doing." - Aristotle In this episode, Eric turns the mic around and interviews his co-host, Bill Spohn, about the evolution of TruTech Tools, his leadership philosophy, and why he's shifting from "Chief Executive Officer" to "Chief

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39:29

EP246 Beyond MERV: The Truth About Smoke, Sensors,...

Building HVAC Science ·

2025/11/28

Episode quotes: "Below about 0.4 microns, many low-cost PM sensors are basically guessing—right where wildfire smoke and aerosols live." — Sissi Liu "Electrostatic filters can look great at first—and then fall off a cliff in smoke. Pressure drop won't warn you." — Sissi Liu "Science is a way of thinking much more than it is a body of knowledge." — Carl Sagan Eric digs into the "fresh air" myth with Sissi Liu, CEO/co-founder of Metalmark Innovations and active ASHRAE committee member. Sissi

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38:38

EP245 Retrofit the Future: Inside PHIUS's New Revive...

Building HVAC Science ·

2025/11/21

Eric Kaiser sits down with Haley Harlow and Al Mitchell from PHIUS (Passive House Institute US) to explore Revive 2024, a groundbreaking new retrofit standard focused on thermal resilience and healthier, safer existing buildings. Haley shares her path from Pennsylvania College of Technology to her current role managing building certifications at PHIUS. At the same time, Al recounts his journey from aspiring car engineer to building scientist, drawn to the elegant complexity of whole-building

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264 results

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